withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3

withenv(f, kv::Pair...) Execute f in an environment that is temporarily modified (not replaced as in setenv) by zero or more "var"=>val arguments kv. withenv is generally used via the withenv(kv...) do 3, 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 source Base.replace! – 4]) 4-element Vector{Int64}: 2 2 6 4 julia> replace!(Dict(1=>2, 3=>4)) do kv first(kv) < 3 ? first(kv)=>3 : kv end Dict{Int64, Int64} with 2 entries: 3 => 4 1 => 3 julia> replace!(x->2x, Set([3